Preparation method for agricultural nutrient superabsorbent resin

A technology of superabsorbent resin and nutritional type, applied in chemical instruments and methods, applications, agriculture, etc., can solve the problems of lack of nutritional function, high cost of superabsorbent resin, and reduce raw material costs, etc., to achieve good biological and chemical stability, Expand effective utilization and increase water absorption effect

Inactive Publication Date: 2012-08-01
朱春来
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In agricultural applications, due to the high cost of superabsorbent resins, the application and promotion of superabsorbent resins have been seriously hindered. Many domestic scientists have done a lot of work in reducing the cost of superabsorbent resins, but most of the work is mainly concentrated on Add cheap materials such as bentonite, kaolin and attapulgite to the polymerization system to achieve the purpose of reducing costs. Although adding some inorganic minerals can improve the hydrogel strength of the water-retaining material after absorbing water, but the performance is high. The amount of resin soil added is low, which cannot fundamentally reduce the cost of raw materials
In addition, the product function only has the same water absorption and water release functions as ordinary water-absorbent resins, and lacks nutritional functions.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) Weigh 10 parts by weight of dry natural sheep manure, and crush it into 100-mesh powder;

[0027] 2) Disperse 10 parts by weight of kaolin in 20 ml of dimethyl sulfoxide solution, stir and react at 80°C for 24 hours, wash with absolute ethanol three times, and dry in vacuum at 50°C for 8 hours; then disperse it in distilled water and dry Stir to make it swell for 10 minutes, pour it into a three-necked round bottom flask as the first component; then fully dissolve the carboxymethyl starch with distilled water, and transfer it to a separatory funnel to form the second component; at 60°C, Add the second component dropwise to the first component, and react at 80°C for 8 hours after the dropwise addition is completed; after the reaction is completed, filter with suction, wash, and put the sample in a vacuum drying oven to dry at 60°C for 3 hours. Dry at 80°C for 0.5 hours to obtain light gray granules, grind them into fine granules with a mortar, and obtain carboxymethy...

Embodiment 2

[0033] 1) Weigh 15 parts by weight of dry natural sheep manure, and crush it into 100-mesh powder;

[0034]2) Disperse 15 parts by weight of kaolin in 20 ml of dimethyl sulfoxide solution, stir and react at 80°C for 24 hours, wash with absolute ethanol three times, and dry in vacuum at 50°C for 8 hours; then disperse it in distilled water and dry Stir to make it swell for 10 minutes, pour it into a three-necked round bottom flask as the first component; then fully dissolve the carboxymethyl starch with distilled water, and transfer it to a separatory funnel to form the second component; at 60°C, Add the second component dropwise to the first component, and react at 80°C for 8 hours after the dropwise addition is completed; after the reaction is completed, filter with suction, wash, and put the sample in a vacuum drying oven to dry at 60°C for 3 hours. Dry at 80°C for 0.5 hours to obtain light gray granules, grind them into fine granules with a mortar, and obtain carboxymethyl ...

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PUM

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Abstract

The invention relates to agricultural nutrient superabsorbent resin, which comprises the following substrates in parts by weight: 10-15 parts of dry natural sheep manure, 10-15 parts of kaolin, 15-25 parts of acrylic acid and 10-15 parts of isopropenylancetylene phosphonic acid. The superabsorbent resin has the beneficial effects that: the water absorption rate of the agricultural nutrient superabsorbent resin prepared with the method is 450-550 times, the normal saline solution absorption multiplying power is up to 100-140 times, and the gelation rate is over 85 percent. Due to the adoption of a water-retaining agent with a nutrient function, cost can be reduced greatly.

Description

[0001] technical field [0002] The invention belongs to the field of superabsorbent resins, and in particular relates to a preparation method of agricultural nutritional superabsorbent resins. [0003] Background technique [0004] Super Absorbent Polymer (SAP) is a new type of functional polymer material. It has a high water absorption function of absorbing water hundreds to thousands of times heavier than itself, and has excellent water retention performance. Once it absorbs water and swells into a hydrogel, it is difficult to separate the water even if it is pressurized. Therefore, it is widely used in various fields such as personal hygiene products, industrial and agricultural production, and civil engineering. [0005] Superabsorbent resin is a kind of macromolecule containing hydrophilic groups and cross-linked structure. It was first prepared by Fanta et al. by grafting polyacrylonitrile with starch and then saponifying it. Divided by raw materials, there are sta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/02C08K9/04C08K3/34C08F220/06C08F230/02C09K17/40
Inventor 朱春来
Owner 朱春来
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